Olivia Wilde's Changing Looks

1. 2003

2. 2004

To play punky Alex Kelly on The O.C., Wilde worked a rockabilly faux-hawk.

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3. 2005

She swept her locks back Bardot-style for the Maxim Hot 100 bash.

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4. 2005

The blonde went brunette - Wilde debuted a glossy auburn mane at the Us Weekly Young Hollywood party.

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5. 2006

Super '60s for the Scream Awards! The Turistas lead paired winged liner with nude lips.

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6. 2007

Wilde hit the small screen with both The Black Donnellys and House, appearing at the Emmys with long, loose waves.

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7. 2008

She was a bronzed goddess for Entertainment Weekly's pre-Emmys event.

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8. 2008

A loose, romantic updo was the perfect accompaniment to rosy lips and cheeks at the Emmy Awards.

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9. 2009

She brought out her blue eyes at the Emmys with gunmetal gray shadow.

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10. 2010

"I love this look on Olivia Wilde because it's an updo that still feels full and sexy," hairstylist Charles Dujic said of the high ponytail he created for the Golden Globes.

Dee Cercone/Everett Collection

11. 2010

The Tron: Legacy actress opted for Old Hollywood crimson lips at the Vanity Fair Oscars party.

Hitoshi Yamada/Penta Press/PictureGroup

12. 2010

She attended the opening ceremony of the Tokyo International Film Festival with a gleaming top knot.

Kyle Rover/Startraks

13. 2011

Keratase stylist Terry Millet created a "chic French girl" down 'do for the Golden Globes.

Jon Kopaloff/FilmMagic

14. 2011

For the Cowboys and Aliens premiere, Chanel makeup artist Melanie Ingelssis started by rimming the entire eye, waterline included, with a soft kohl pencil and then applying a shimmering cream shadow to the lids as a base. Next, she defined the outer and inner areas of with a black shadow for a sexy, smudgy look. "The trick to a beautiful smoky eye is blending, so I took a brush and with one motion, blended the upper and lower colors together," says Ingelssis. Curling Wilde's lashes and adding two coats of mascara was the finishing touch to elegant and timeless look.

Luiz Martinez / Broadimage

15. 2011

Wilde's hair pro, David Babaii created this glossy style for the L.A. premiere of The Change Up without even using a flatiron! He started by smoothing pequi oil - derived from pequi fruit, it's known as the beauty secret of the Amazon rainforest - through wet hair. "It blocks out humidity for straight hair that lasts all night long," explains Babaii. He gave Wilde's bangs a game-day trim and then blew them dry with a small round brush to create a slight curve into the eyebrows.

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16. 2012

Hairstylist David Babaii gave Wilde a soft, textured bob for the Palm Springs International Film Festival.

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17. 2012

"Olivia is gorgeous!" says her hairstylist Peter Butler of her waves at the Tribeca Film Festival. Butler created the star's look by applying mousse to damp strands, then blow-dried them. "After drying, I used a two-inch barrel curling iron to put waves in random sections to give her hair a sexy, tousled look."

Dara Kushner/INFphoto

18. 2012

Wilde went for minimal makeup at the ACE Awards in New York City. Before applying foundation, her makeup artist Gianpaolo Ceciliato gave Wilde a mini-face massage to stimulate the blood vessels in her skin, and impart a natural flush. "I start by prepping the skin with moisturizer and a good massage - the massage is my primer," he said. Ceciliato blended different shades of foundation over the star's face to impart a subtle contour. "I always use two foundations: The lighter one under the eyes, on the center of the forehead, and on the chin. The darker shade is placed around the hairline, on the jaw, neck, and cheek, then I blend everything together."

George Pimentel/WireImage

19. 2013

Wilde embraced the bright beauty trend in 2013 by lightening her dark locks to a warm honey hue and trying out a neon pink pout.

Steve Granitz/WireImage

20. 2014

Olivia didn't let being pregnant keep her off the best dressed list! The expecting actress glowed at the 2014 Golden Globes with wavy ombre locks, bronzed skin, and a smoky eye.